Spraying device for use in manufacturing paper.



Patented June 5, 1900.

R. DIETRICH. SPRAYING DEVICE FOR USE INMANU'FACTUBING PAPER.

(Application filed Nov. 24, 1899.)

(No In tial.)

Wi messes:

UNITED STATES v PATENT @FFIC'E.

ROBERT DIETRIOH, OF MERSEBURG, GERMANY.

SPRAYING DEVICE FOR use IVN MANUFACTURING PAPER.

SPECIFICATION formingpart of Letters ljPatent No. 651,162, dated June 5,1900. Application filed November 24, 1899. Serial No. 738,134. (Nomodel.)

To aZZ whom it may concern.-

Be it known that I, ROBERT DIETRICH,paper manufacturer, a subject of theEmperor of Germany, residing at 5 Miihlberg, Mersebu rg, in the Empireof Germany, have invented certain new and useful Improvements in andRelating to Spraying Devices for Use in Connection with Apparatus forthe Manufacture of Paper and the Like, of which the following is aspecification.

This invention relates to a jet-tube arrangement or spraying device forusein connection with apparatus for the manufacture of paper, cellulose,and the like; and it has for its objectthe prevention of obstructions inthe water-outlet holes, so as to maintain a uniform action.

It is of particular importance in the regular working of rotaryknot-catchers that the water-jet tube disposed above the drum of theknot-catcher should always uniformly moisten the entire surface of thedrum, and consequently that the holes in the jet-tube should not becomestopped byimpurities. Although various means have heretofore beenproposed for this purpose, they have not proved completely successful,owing to the fact that they are not based upon the principle ofpreventingtheimpurities from reaching the jet-holes. To effectuallyprevent the impurities from choking or stopping the jet-holes, I proposeto provide the said holes at the upper portion of the tube, and for thispurpose the tube is formed of such a cross-section that, notwithstandingthe issue of water at the highest portion, it permits the free ejectionof water-jets over the entire surface of the knot-catcher. Although inthis manner great safety from the stoppage of the jet-holes is obtained,it is now proposed to render such stoppage practically impossible by theuse of a sand and mud trap connected to the jet-tube for filtering thewater previously to its entrance into the jet-tube.

The accompanying drawings show a jettube arrangement constructed inaccordance with this invention.

Figure 1 is an elevation, partly in section, of a portion of thejet-tube provided with the sand and mud trap. Fig. 2 is an elevation,partly in section, of the sand and mud trap, shown separately, taken atright angles to sand and mud trap. Fig. 4 is a cross-section of thejet-tube, taken on the line A B of Fig. 1. Fig. 5 is a similar sectiontaken on the line C D of Fig. 1, and Fig. 6 is a similar section showinga slightlymodified form of jettube.

The sand and mud trap shown in Figs. 1 and 2 consists of a cylindricalvessel a, formed with a lower tapering portion and provided with inletand outlet branches or sockets and with a removable cover I) at the top,preferably fixed in place by means of screw-bolts attached by eyes tothe under side of the flange of the vessel a, such bolts being capableof swinging on their pivots. In the interior of the sand and mud trap aand close against the outlet-opening is arranged a deflector-platen, thelatter being curved and provided at the middle with a number of smallholes 0'. The water is caused to pass around the deflector-plate beforeit can pass throughthe two narrow passages leading to the outlet-socket.As the current of water strikes the deflector-plate it is uniformlydivided, and owing to the difiusion of the current in the wider part ofthe vessel the particles of sand and mud are permitted to separate outfrom the current and then drop into the lower portion of the vessel on,from which they are removed from time to time through a discharge-cock dor the like. The water thus purified then passes through the outletbranch or socket 6 into the jet-tube f.

The jet-tube is double-chambered in crosssection and consists of a lowertube 9 of circular,elliptical,semi-elliptical, egg-shaped, or otherconvenient section and of a cap h, surmounting the tube proper. Thislower tube 9 communicates with the cap by a narrow opening or slot k,specially provided for this purpose. The cap is narrowest at the openingor slot and is provided at its overhanging front end with holes 2',disposed at an angle with the slot and delivering the water-jets at asuitable angle to the drum. (See Fig. 4c.) The combination, as well asthe special form of the jet-tube, may be varied in many ways withoutaltering the nature of the invention. Thus, for example, the frontportion of the cap may be caused to project so far forward, and at thesame time the jet-tube flattened Fig. 1. Fig. 3 is a horizontal sectionof the at the side, as to permit of the waterjets issuing in an almostvertical direction, as shown in Fig. 6.

It will readily be seen that the water passing through the sand-trap andentering the jet-tubes will deposit at the bottom of the said tube anyimpurities it may have carried with it, and this is furtherfaeilitatedbygiving such tube an egg-shaped cross-section, Fig. 4.Moreover, it is clear from the position of the slot 76 with regard tothe sprayingholes 2' that it is-almost impossible forsuspendedsubstances in the water to enter the outlet portion of thespraying-tube. Thus the object of the arrangement is effected by theimproved jet-tube in the most perfect manner.

What I claim is 1. A jet-tube arrangement or spraying device for rotaryknot-catchers, felt-washers, (he. for use in the manufacture ofpaper,wood fiber and cellulose, characterized by a jettube having adivided cross-section consisting of a lower water-supply tube formedwith a small opening or slot in its upper portion and surmounted by acap provided with sprayholes arranged at a higher level than the saidopening or slot.

2. In a jet-tube arrangement, the combination with the jet-tube f of amud and sand trap a in which the Water-current is deflected from itsstraight course by a deflector-plate c and caused to depositsuspendedsubstances in the tapered lower portion of the said trap from which theycan be removed from time to time through a discharge or outlet device.

3. In a jet-tube arrangement, a sand and mud trap characterized by acurved deflectorplate 0 having holes 0 for obtaining a uniformseparation of the inflowing current.

4:. In a jet-tube arrangement, the combination of a mud and sand trap,means in the latter for defiectinga water-current and causing the latterto deposit suspended substances in the lower portion of said trap, ajet-tube having in its lower portion, a water-supply tube, a slot in theupper portion of the latter, a cap above said slot, and spray-holes insaid cap located at a higher level than said slot.

In testimony whereof I have hereunto set my hand, in presence of twosubscribing witnesses, this 10th day of November, 1899.

ROBERT DIETRICI-I.

Vitnesses:

RUDOLPH FRICKE, A. KRAUSS.

